/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:26:59,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:26:59,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:26:59,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:26:59,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:26:59,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:26:59,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:26:59,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:26:59,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:26:59,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:26:59,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:26:59,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:26:59,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:26:59,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:26:59,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:26:59,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:26:59,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:26:59,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:26:59,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:26:59,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:26:59,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:26:59,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:26:59,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:26:59,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:26:59,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:26:59,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:26:59,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:26:59,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:26:59,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:26:59,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:26:59,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:26:59,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:26:59,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:26:59,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:26:59,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:26:59,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:26:59,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:26:59,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:26:59,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:26:59,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:26:59,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:26:59,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:26:59,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:26:59,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:26:59,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:26:59,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:26:59,675 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:26:59,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:26:59,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:26:59,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:26:59,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:26:59,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:26:59,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:26:59,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:26:59,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:26:59,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:26:59,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:26:59,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:26:59,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:26:59,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:26:59,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:26:59,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:26:59,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:26:59,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:26:59,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:26:59,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:26:59,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:26:59,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:26:59,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:26:59,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:26:59,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:26:59,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:27:00,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:27:00,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:27:00,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:27:00,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:27:00,195 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:27:00,196 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 13:27:00,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0747250c/7c1f255eb48c4f4fa5ab8c2aef570579/FLAGf27a74c8f [2020-09-25 13:27:00,834 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:27:00,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 13:27:00,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0747250c/7c1f255eb48c4f4fa5ab8c2aef570579/FLAGf27a74c8f [2020-09-25 13:27:01,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0747250c/7c1f255eb48c4f4fa5ab8c2aef570579 [2020-09-25 13:27:01,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:27:01,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:27:01,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:27:01,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:27:01,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:27:01,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:27:01" (1/1) ... [2020-09-25 13:27:01,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6708ede7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01, skipping insertion in model container [2020-09-25 13:27:01,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:27:01" (1/1) ... [2020-09-25 13:27:01,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:27:01,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:27:01,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:27:01,489 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:27:01,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:27:01,530 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:27:01,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01 WrapperNode [2020-09-25 13:27:01,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:27:01,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:27:01,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:27:01,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:27:01,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01" (1/1) ... [2020-09-25 13:27:01,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01" (1/1) ... [2020-09-25 13:27:01,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01" (1/1) ... [2020-09-25 13:27:01,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01" (1/1) ... [2020-09-25 13:27:01,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01" (1/1) ... [2020-09-25 13:27:01,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01" (1/1) ... [2020-09-25 13:27:01,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01" (1/1) ... [2020-09-25 13:27:01,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:27:01,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:27:01,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:27:01,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:27:01,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:27:01,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:27:01,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:27:01,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 13:27:01,727 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 13:27:01,727 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 13:27:01,728 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-25 13:27:01,728 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-25 13:27:01,728 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-25 13:27:01,728 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-25 13:27:01,728 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-25 13:27:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-25 13:27:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:27:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:27:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 13:27:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:27:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 13:27:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 13:27:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-25 13:27:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-25 13:27:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-25 13:27:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-25 13:27:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-25 13:27:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-25 13:27:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:27:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:27:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:27:02,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:27:02,142 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:27:02,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:27:02 BoogieIcfgContainer [2020-09-25 13:27:02,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:27:02,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:27:02,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:27:02,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:27:02,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:27:01" (1/3) ... [2020-09-25 13:27:02,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebde29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:27:02, skipping insertion in model container [2020-09-25 13:27:02,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:01" (2/3) ... [2020-09-25 13:27:02,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebde29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:27:02, skipping insertion in model container [2020-09-25 13:27:02,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:27:02" (3/3) ... [2020-09-25 13:27:02,159 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-25 13:27:02,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:27:02,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:27:02,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:27:02,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:27:02,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:27:02,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:27:02,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:27:02,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:27:02,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:27:02,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:27:02,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:27:02,257 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 13:27:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 13:27:02,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:02,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:02,266 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:02,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:02,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-25 13:27:02,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:02,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881223290] [2020-09-25 13:27:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:02,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:02,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:02,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:27:02,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:27:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 13:27:02,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:02,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:27:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 13:27:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:27:02,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:27:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:02,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:02,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:02,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:27:02,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:02,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:02,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:02,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:02,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 13:27:02,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:27:02,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:27:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:02,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:02,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:02,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:02,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:27:02,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:02,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:27:02,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:27:02,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881223290] [2020-09-25 13:27:02,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:27:02,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:27:02,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692923458] [2020-09-25 13:27:02,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:27:02,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:02,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:27:02,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:27:02,848 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 5 states. [2020-09-25 13:27:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:03,197 INFO L93 Difference]: Finished difference Result 265 states and 334 transitions. [2020-09-25 13:27:03,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:27:03,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 13:27:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:03,218 INFO L225 Difference]: With dead ends: 265 [2020-09-25 13:27:03,219 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 13:27:03,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:27:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 13:27:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 13:27:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 13:27:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-25 13:27:03,305 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 19 [2020-09-25 13:27:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:03,306 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-25 13:27:03,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:27:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-25 13:27:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:27:03,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:03,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:03,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:27:03,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:03,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:03,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-25 13:27:03,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:03,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324561764] [2020-09-25 13:27:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:03,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:03,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:03,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:04,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:27:04,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:27:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-09-25 13:27:04,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:04,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:27:04,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:27:04,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:04,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:04,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:04,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:04,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:04,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:27:04,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:04,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:04,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:27:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:04,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:04,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:04,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:04,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:27:04,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:04,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:27:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:04,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:27:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:04,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:04,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:04,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:27:04,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:04,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:27:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:04,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:27:04,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324561764] [2020-09-25 13:27:04,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:27:04,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:27:04,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085552457] [2020-09-25 13:27:04,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:27:04,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:04,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:27:04,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:27:04,107 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-25 13:27:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:04,382 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-09-25 13:27:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:27:04,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 13:27:04,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:04,386 INFO L225 Difference]: With dead ends: 411 [2020-09-25 13:27:04,387 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 13:27:04,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:27:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 13:27:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-09-25 13:27:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 13:27:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-09-25 13:27:04,414 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-09-25 13:27:04,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:04,415 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-09-25 13:27:04,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:27:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-09-25 13:27:04,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 13:27:04,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:04,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:04,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:27:04,419 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:04,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-09-25 13:27:04,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:04,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740979517] [2020-09-25 13:27:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:04,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:06,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:06,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:27:06,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:27:06,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1947 [2020-09-25 13:27:06,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:06,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:06,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:27:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 13:27:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:27:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:06,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:06,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:06,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:06,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:27:06,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:06,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:06,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:27:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:06,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:06,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:06,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:06,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:27:06,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:06,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:06,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:06,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:27:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:06,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:06,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:06,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:27:06,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:27:06,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:06,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:27:06,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 13:27:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:06,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:06,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:06,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:27:06,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:06,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:27:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:27:06,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740979517] [2020-09-25 13:27:06,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:27:06,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:27:06,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622900510] [2020-09-25 13:27:06,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:27:06,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:06,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:27:06,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:27:06,508 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 8 states. [2020-09-25 13:27:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:06,902 INFO L93 Difference]: Finished difference Result 573 states and 736 transitions. [2020-09-25 13:27:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:27:06,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 13:27:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:06,907 INFO L225 Difference]: With dead ends: 573 [2020-09-25 13:27:06,907 INFO L226 Difference]: Without dead ends: 387 [2020-09-25 13:27:06,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:27:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-09-25 13:27:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 240. [2020-09-25 13:27:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-25 13:27:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 298 transitions. [2020-09-25 13:27:06,946 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 298 transitions. Word has length 59 [2020-09-25 13:27:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:06,947 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 298 transitions. [2020-09-25 13:27:06,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:27:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 298 transitions. [2020-09-25 13:27:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 13:27:06,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:06,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:06,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:27:06,957 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:06,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:06,957 INFO L82 PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times [2020-09-25 13:27:06,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:06,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317058221] [2020-09-25 13:27:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:08,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:11,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:11,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 13:27:11,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:27:11,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4175 [2020-09-25 13:27:11,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:11,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:27:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:27:11,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 13:27:11,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:11,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:11,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:11,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:11,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:11,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:27:11,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:11,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:11,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:27:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:11,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:11,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:11,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:11,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:11,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:27:11,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:11,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:11,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:11,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:11,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:27:11,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:27:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:11,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:11,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:27:11,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:27:11,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:11,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:27:11,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:27:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:27:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:11,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:11,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:11,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:27:11,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:11,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:27:11,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:11,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:27:11,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:11,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 13:27:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:11,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:11,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:11,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:11,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:27:11,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:11,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:27:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:27:11,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317058221] [2020-09-25 13:27:11,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:27:11,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:27:11,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700300356] [2020-09-25 13:27:11,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:27:11,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:11,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:27:11,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:27:11,333 INFO L87 Difference]: Start difference. First operand 240 states and 298 transitions. Second operand 10 states. [2020-09-25 13:27:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:11,898 INFO L93 Difference]: Finished difference Result 735 states and 963 transitions. [2020-09-25 13:27:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:27:11,899 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-09-25 13:27:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:11,908 INFO L225 Difference]: With dead ends: 735 [2020-09-25 13:27:11,908 INFO L226 Difference]: Without dead ends: 509 [2020-09-25 13:27:11,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:27:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-09-25 13:27:11,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 280. [2020-09-25 13:27:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-25 13:27:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 355 transitions. [2020-09-25 13:27:11,951 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 355 transitions. Word has length 79 [2020-09-25 13:27:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:11,952 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 355 transitions. [2020-09-25 13:27:11,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:27:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 355 transitions. [2020-09-25 13:27:11,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 13:27:11,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:11,961 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:11,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:27:11,962 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:11,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:11,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1731656998, now seen corresponding path program 1 times [2020-09-25 13:27:11,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:11,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693602869] [2020-09-25 13:27:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:12,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:12,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:12,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 13:27:12,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:27:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 13:27:12,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:12,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:27:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:27:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 13:27:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:12,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:12,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:12,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:12,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:12,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:27:12,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:12,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:12,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:27:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:12,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:12,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:12,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:27:12,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:12,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 13:27:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:27:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:12,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:12,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:27:12,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:12,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:27:12,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:12,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:12,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:27:12,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:27:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:27:12,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:27:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:27:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:27:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:12,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:27:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:12,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:27:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:12,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:12,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:12,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:27:12,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:12,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:27:12,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:12,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:27:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 13:27:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:12,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:12,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:27:12,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:12,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:27:12,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:12,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:27:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 13:27:12,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693602869] [2020-09-25 13:27:12,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:27:12,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:27:12,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644993757] [2020-09-25 13:27:12,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:27:12,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:12,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:27:12,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:27:12,802 INFO L87 Difference]: Start difference. First operand 280 states and 355 transitions. Second operand 7 states. [2020-09-25 13:27:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:13,099 INFO L93 Difference]: Finished difference Result 1092 states and 1427 transitions. [2020-09-25 13:27:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:27:13,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-09-25 13:27:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:13,108 INFO L225 Difference]: With dead ends: 1092 [2020-09-25 13:27:13,108 INFO L226 Difference]: Without dead ends: 826 [2020-09-25 13:27:13,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:27:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-09-25 13:27:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 513. [2020-09-25 13:27:13,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 13:27:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 658 transitions. [2020-09-25 13:27:13,150 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 658 transitions. Word has length 101 [2020-09-25 13:27:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:13,152 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 658 transitions. [2020-09-25 13:27:13,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:27:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 658 transitions. [2020-09-25 13:27:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 13:27:13,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:13,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:13,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:27:13,156 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:13,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-25 13:27:13,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:13,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001270657] [2020-09-25 13:27:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:27:13,180 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:27:13,180 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:27:13,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:27:13,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:27:13 BoogieIcfgContainer [2020-09-25 13:27:13,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:27:13,221 INFO L168 Benchmark]: Toolchain (without parser) took 12055.32 ms. Allocated memory was 140.0 MB in the beginning and 307.8 MB in the end (delta: 167.8 MB). Free memory was 103.5 MB in the beginning and 106.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 164.8 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:13,223 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:27:13,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.70 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:13,232 INFO L168 Benchmark]: Boogie Preprocessor took 122.24 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 180.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:13,233 INFO L168 Benchmark]: RCFGBuilder took 494.95 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 158.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:13,234 INFO L168 Benchmark]: TraceAbstraction took 11066.30 ms. Allocated memory was 202.4 MB in the beginning and 307.8 MB in the end (delta: 105.4 MB). Free memory was 157.9 MB in the beginning and 106.5 MB in the end (delta: 51.4 MB). Peak memory consumption was 156.8 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:13,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.70 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.24 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 180.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.95 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 158.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11066.30 ms. Allocated memory was 202.4 MB in the beginning and 307.8 MB in the end (delta: 105.4 MB). Free memory was 157.9 MB in the beginning and 106.5 MB in the end (delta: 51.4 MB). Peak memory consumption was 156.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 501 SDtfs, 1161 SDslu, 1484 SDs, 0 SdLazy, 874 SolverSat, 300 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 758 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 397 NumberOfCodeBlocks, 397 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 53191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 56/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...